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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

Brake question....

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Old Mar 24, 2002 | 07:45 AM
  #1  
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lastchance
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Brake question....

 
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Old Mar 26, 2002 | 08:37 PM
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cpegram
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From: Mesquite USA
Brake question....

Did the disc brake changeover on my 72 F100.
Noticed while bleeding the brakes that the rear larger bowl of the master cylinder is feeding the rear brakes...the smaller bowl the front. I am gathering this from the fact that the rear bowl drains while bleeding the rear, and vice versa.
I have the proportioning valve plumbed according to the the diagram on the disc brake tech article...
Shouldn't the larger bowl feed the front brakes? And if so, what gives here.....
 
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Old Mar 26, 2002 | 09:06 PM
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From: Brea CA
Brake question....

Sounds like you got your lines crossed somewhere. The front port feeds the rear brakes and the rear port feeds the front brakes.

Barry
 
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Old Mar 27, 2002 | 12:18 PM
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DavidB
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Brake question....

I agree. Looks like you have the lines crossed. The larger bowl feeds the front disk brakes and the smaller bowl feeds the rear brakes.
 
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Old Mar 27, 2002 | 05:51 PM
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cpegram
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From: Mesquite USA
Brake question....

That's what I'm thinking...my question would be this then...
on the proportioning valve diagram where it says "front inlet" does that mean that you run the line for the front bowl there, or is that the inlet from the rear bowl that is supposed to feed the front brakes....
I assumed that "front inlet" meant that you ran the line from the front bowl to that inlet....but I am starting to think that it really means that I am supposed to run the line for the rear bowl to that inlet....
 
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Old Mar 27, 2002 | 06:13 PM
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From: Brea CA
Brake question....

I think you got it. “Front Inlet” means front inlet for the front brakes. This should be fed by the rear port on the MC which is the primary piston for the front brakes.

Barry

 
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